What problem can arise from compressing insulation in the eaves area?

• A. Increased sound insulation
• B. Diminished R-value
• C. Enhanced air circulation
• D. Improved moisture retention

Answer: (B)

Compressing insulation in the eaves area leads to diminished R-value because the effectiveness of insulation is significantly impacted when it is compressed. The R-value measures insulation's ability to resist heat flow, and this resistance is directly related to the thickness and density of the insulation material. When insulation is squished or compressed, the air pockets that provide thermal resistance are reduced, leading to a lower R-value. As a result, the insulation becomes less effective at preventing heat transfer, which can cause issues with energy efficiency and temperature regulation within the home. Proper installation that maintains the insulation's intended thickness is crucial for achieving optimal thermal performance.